Question

Why does a clear, saturated solution of PbI2 form a yellow precipitate when a small amount of KI is added to the solution?

A. KI is insoluble in PbI2.
B. PbI2 is always insoluble in water.
C. Adding KI is like adding I-, which drives the reaction toward the formation of PbI2.
D. Adding KI is like adding I-, which drives the reaction toward the formation of I-.

Answer 1

A or B?

Answer 2

neither

Answer 3

remember that a saturated solution is a solution \(in \space equilibrium\)

Answer 4

Oh so it's D?

Answer 5

i remember this reaction, two clear liquids make a extremely yellow coloured liquid

Answer 6

is the \(I^{-1}\) the precipitate?

Answer 7

Yes?

Answer 8

ions don't precipitate

Answer 9

\[\text{Pb}\text I_2\] is the yellow precipitate